Gas Furnace Burners Shut Off

This is the most common furnace problem which also happens to be the easiest thing to fix.

Gas furnace burners shut off.

If it does not detect a flame it shuts the gas valve. If the flame sensor becomes corroded or covered in soot it cannot detect flames even when your furnace is running properly. Now normally this is a good thing for you because if it didn t shut the gas valve your furnace could fill your home with gas. A flame sensor problem could be why your furnace keeps shutting off.

Without it shutting off gas could penetrate your home causing a very dangerous build up of toxic and flammable gas. Sometimes a furnace keeps shutting off because the flame sensor is corroded or caked in soot. Are your furnace burners only coming on for a few seconds. Well the flame sensor rod is a safety device designed to detect a flame in your furnace burners.

When operating normally the flame sensor detects flames and turns off the gas valve when there isn t any. Dirty flame sensor by far the most common issue a dirty flame sensor will cause the gas valve to shut off as a safety precaution. And one well lit match could cause an explosion.